'3 (list 'a 'b) 'a '(a b) (append '(a b) '((c)) '(d)) (list 'a 3 '4
'(a b))

(list)
(list ())
(list 1)
(list 1 2 )
(list 1 2 3 )
(list 1 2 3 4 )
(list 'a)
(list 'b 1 2 (list 5 6) 3 'c )
(list ' (((((()))))))
(list (list (list (list (list (list (list 4)))))))

(listp)
(listp 8)
(listp 'bb)
(listp '(a b c))
(listp ())
(atom)
(atom 8)
(atom ' bb)
(atom ' (a b c))
(atom ())
(null ())
(null ' bb)
(null ' (a))
(null 88)
(integerp 3)
(integerp ' bb)
(integerp ' (a))
(integerp ())
(integerp ' ())
